public class Equation {
    int a,b,c;
    double x1,x2;
    void input(int a,int b,int c){
        this.a=a;
        this.b=b;
        this.c=c;
    }
    boolean equationsolve(){
        boolean fin = false;
        if (a==0) {
            System.out.println("这不是一元二次方程");
        }else {
            int deta = b*b-4*a*c;
            if(deta<0){
                System.out.println("方程无解");
            }else {
                x1 = (-b+Math.sqrt(deta))/(2*a);
                x2 = (-b-Math.sqrt(deta))/(2*a);
                fin = true;
            }
        }
        return  fin;
    }

    void print(){
        System.out.println("x1="+x1);
        System.out.println("x2="+x2);
    }
}
